2003 YAMAHA BIG BEAR PRO 400 torque

8-33 a. Front drain bolt
b. Rear drain bolt
a. Boulon de vidange avant
b Boulon de vidange arrière
a. Perno de drenaje frontal
b. Perno de drenaje trasero
4. Install the drain bolts and tighten to specifica-
tion.
5. Fill the differential gear case with oil.CAUTION:_ Be sure no foreign material enters the differen-
tial gear case. _
Tightening torque:
Drain bolt (differential gear case):
a 23 Nm (2.3 m·kgf)
b 16 Nm (1.6 m·kgf)
Recommended oil:
See page 10-3.
Oil quantity:
Periodic oil change:
0.47 L
Total amount:
0.5 L
U4SH6A.book Page 33 Thursday, May 30, 2002 1:25 PM

8-35 1. Boot (× 2)
1. Soufflet (× 2)
1. Guardapolvo (× 2)
1. Boot (× 2)
1. Soufflet (× 2)
1. Guardapolvo (× 2)
6. Install the filler bolt and tighten it to specifica-
tion.
7. Check for oil leakage. If oil leakage is found,
check for the cause.
EBU00862
Axle boots
Check the protective boots for holes or tears. If any
damage is found, have them replaced by a
Yamaha dealer.Tightening torque:
Filler bolt (differential gear case):
23 Nm (2.3 m·kgf)
U4SH6A.book Page 35 Thursday, May 30, 2002 1:25 PM

8-39 a. Spark plug gap
a.Écartement des électrodes
a. Huelgo de la bujía
Installation
1. Measure the electrode gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.
2. Clean the gasket surface. Wipe off any grime
from the threads.
3. Install the spark plug and tighten it to the
specified torque. Spark plug gap:
0.6–0.7 mm
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf)
U4SH6A.book Page 39 Thursday, May 30, 2002 1:25 PM

8-41
NOTE:If a torque wrench is not available when you are in-
stalling a spark plug, a good estimate of the correct
torque is 1/4 to 1/2 turn past finger tight. Have the
spark plug tightened to the specified torque as
soon as possible.4. Install the spark plug cap.
U4SH6A.book Page 41 Thursday, May 30, 2002 1:25 PM

8-77 1. Locknut 2. Adjusting bolt
1. Contre-écrou 2. Boulon de réglage
1. Contratuerca 2. Perno de ajuste
EBU00346
Clutch adjustment
1. Loosen the locknut.
2. Slowly turn the adjusting bolt counterclock-
wise until resistance is felt. Then, turn it 1/8
turn clockwise.
3. Tighten the locknut to specification.NOTE:Turn the adjusting bolt counterclockwise to de-
crease the clutch free play and turn it clockwise to
increase the free play.
Tightening torque:
15 Nm (1.5 m·kgf)
U4SH6A.book Page 77 Thursday, May 30, 2002 1:25 PM

8-83 1. Tapered nut
1.Écrou conique
1. Tuerca cónica
2. Lower the ATV so that the wheel is on the
ground.
3. Tighten the wheel nuts to the specified
torque.
EBU00381
Battery
This machine is equipped with a sealed-type bat-
tery. Therefore it is not necessary to check the
electrolyte or add distilled water in the battery. If
the battery seems to have discharged, consult a
Yamaha dealer.CAUTION:
Do not try to remove the sealing caps of the
battery cells. You may damage the battery.Wheel nut torque:
Front: 55 Nm (5.5 m·kgf)
Rear: 55 Nm (5.5 m·kgf)
U4SH6A.book Page 83 Thursday, May 30, 2002 1:25 PM

11-1
EBU01070
Conversion tableACS-02EAll specification data in this manual are listed in SI
and METRIC UNITS.
Use this table to convert METRIC unit values to
IMPERIAL unit values.
Example:
METRIC
VALUECONVERSION
FACTORIMPERIAL
VALUE
2 mm× 0.03937 = 0.08 in
Conversion table
METRIC SYSTEM TO IMPERIAL SYSTEM
Metric unitConversion
factorImperial unit
Torquem·kgf
m·kgf
cm·kgf
cm·kgf
× 7.233× 86.794× 0.0723× 0.8679ft·lbf
in·lbf
ft·lbf
in·lbf
Weightkg
g× 2.205× 0.03527lb
oz
Speed km/h× 0.6214 mi/h
Distancekm
m
m
cm
mm× 0.6214× 3.281× 1.094× 0.3937× 0.03937mi
ft
yd
in
in
Volume,
Capacitycc (cm
3)
cc (cm3)
L (liter)
L (liter)
× 0.03527× 0.06102× 0.8799× 0.2199oz (IMP liq.)
cu·in
qt (IMP liq.)
gal (IMP liq.)
Miscellaneouskg/mm
kgf/cm
2
°
C
× 55.997× 14.2234× 1.8 + 32 lb/in
psi (lbf/in
2)
°
F
U4SH6A.book Page 1 Thursday, May 30, 2002 1:25 PM